871 results about "Waterstop" patented technology

The invention discloses a cavity type mixed tower fan foundation formwork construction method. Comprising the steps of cushion layer pouring, pay-off, cavity foundation slab steel bar binding, annular support system erecting, foundation lower inner formwork supporting and inner support frame body arranging, cantilever anchoring end bottom formwork frame body supporting, cantilever anchoring end bottom formwork installing, foundation upper inner formwork supporting and inner support arranging, anchor backing plate and prestressed pipe installing, steel bar binding and annular support system erecting. And a foundation outer formwork is installed. Compared with the prior art, formwork erecting is formed at a time, a foundation is integrally poured, and the overall construction quality is guaranteed; the problem of leakage caused by two-time pouring of a construction joint part is avoided, water stop steel plates are reduced, and materials are saved; the inner supporting frame bodies are radially arranged with the center of the circle and the center of the stand column as a supporting point, and structural stress is reasonable. The supporting frame body is simple in structure, neat, attractive, reasonable in stress and easy to operate, the center stand column is recycled, and construction is efficient.

The invention discloses an environment-friendly high-strength water-stop belt and a preparation method thereof, and relates to the technical field of high-molecular compound composition water-stop belts. The environment-friendly high-strength water-stop belt is prepared from the following components in parts by mass: 100 parts of ethylene propylene diene monomer, 40 to 70 parts of reinforcing filler, 10 to 25 parts of environment-friendly plasticizer, 1 to 5 parts of interface modifier, 1.5 to 3.5 parts of vulcanizing agent, 3 to 8 parts of active agent, 1 to 3 parts of anti-aging agent and 5 to 15 parts of flame retardant. White carbon black and calcium carbonate are adopted as reinforcing filler to replace traditional carbon black, and energy consumption and pollution emission in the production process are remarkably reduced. By optimizing the formula and the preparation process, the tensile strength, the elongation at break, the tearing strength and other mechanical properties of the waterstop are remarkably improved. Aluminum hydroxide is added as a flame retardant, absorbs heat during thermal decomposition and forms a barrier layer, so that oxygen is effectively diluted, and fire spreading is prevented.

The invention discloses an anti-aging water-stop belt and a preparation method and application thereof, and relates to the technical field of water-stop belts. The invention relates to an anti-aging water-stop belt which is prepared from the following raw materials in parts by mass: 40-60 parts of chloroprene rubber, 10-20 parts of natural rubber, 10-20 parts of ethylene propylene diene monomer, 15-30 parts of carbon black, 5-15 parts of white carbon black, 5-15 parts of a plasticizer, 0.5-2 parts of sulfur, 0.5-1.5 parts of an accelerant, 1-2 parts of an anti-aging ultraviolet light absorber, 5-15 parts of aluminum hydroxide, 1-3 parts of stearic acid and 3-8 parts of zinc oxide. The obtained water-stop belt has excellent ultraviolet aging resistance, ozone resistance and chemical corrosion resistance while keeping high elasticity, the mechanical stability of the water-stop belt is remarkably improved compared with that of a traditional product, the water-stop belt is suitable for joint sealing in harsh environments such as bridges, tunnels and water conservancy projects, and the waterproof service life of engineering structures can be effectively prolonged.

The invention relates to the field of waterproof sealing materials, and discloses a composite high-weather-resistance rubber waterstop which is composed of an outer layer, a middle layer and an inner layer. The outer layer contains 3%-8% of nano titanium dioxide, 2%-5% of nano zinc oxide, 50%-70% of a rubber matrix and 1%-3% of an ultraviolet light absorber, and the total proportion of the outer layer is 10%-20%. The middle layer is composed of 70%-85% of EPDM, 5%-10% of carbon fiber and 5%-10% of plasticizer, and the total proportion of the middle layer is 60%-75%. The inner layer is a dynamic covalent bond rubber material and contains 5%-10% of a vulcanizing agent and 1%-3% of an antioxidant, the rubber material accounts for 80%-90%, and the inner layer accounts for 15%-25% in total. Through a multi-layer composite structure, a dynamic covalent bond self-repairing material and an optimized vulcanization process, the comprehensive performance of the water-stop belt is remarkably improved, and particularly the durability and the service life of the water-stop belt in a long-term exposure environment are improved.

The invention relates to the technical field of prefabricated buildings, and discloses a green low-carbon prefabricated building structure and a construction connecting method.The green low-carbon prefabricated building structure comprises a prefabricated wall, mortise and tenon grooves are formed in the left side and the right side of the prefabricated wall correspondingly, water-swelling waterstops are fixedly connected to the sides, adjacent to the prefabricated wall, of the interiors of the mortise and tenon grooves correspondingly, and an embedding strip is fixedly connected to the top of the prefabricated wall; the top of the embedded strip is fixedly connected with two locking mechanisms, an embedded groove is formed in the bottom of the prefabricated wall, two placement grooves are formed in the top of the inner wall of the embedded groove, butt joint sleeves are fixedly connected into the two placement grooves, and two through grooves are formed in one side of the prefabricated wall. The lock tongue is pushed by the extrusion rod to rotate and be clamped into an empty groove of the butt joint sleeve to form a mechanical occlusion anchoring structure, during installation, once a locking mechanism completes occlusion, even if hoisting equipment is withdrawn, the prefabricated wall can be kept stable, deviation or falling caused by external force is avoided, time and manpower needed by an additional reinforcing procedure are reduced, and the overall installation efficiency is remarkably improved.

The utility model discloses a honeycomb-shaped bridge joint structure which comprises a beam body, a reserved groove is formed in the inner side of the beam body, an anchoring steel bar is fixed in the reserved groove, an installation hole is formed in the upper surface of the beam body, a protection mechanism is installed above the beam body, clamping seats are fixed to the two sides in the beam body, and the clamping seats are fixed to the lower surface of the beam body. A clamping block is installed in the clamping base, and a rubber water stop belt is fixed to the upper portion of the clamping block. According to the honeycomb-shaped bridge joint structure, through cooperative use of the clamping seats, the clamping blocks and the rubber water stop belts, the rubber water stop belts are used for preventing water flow permeation at the joints, erosion and damage to a beam body structure are avoided, and therefore the integrity of the beam body structure is protected, and the service life is prolonged; the problems of steel bar corrosion, concrete cracking and the like caused by water permeation are reduced, the rubber waterstop is of a wave-shaped structure and can better adapt to deformation and displacement of a joint, and the rubber waterstop is convenient to disassemble and assemble due to the arrangement of the clamping blocks.

The utility model relates to the technical field of tunnel engineering disease prevention and control, in particular to a tunnel deformation joint leakage water disease treatment structure under freeze thawing conditions, which comprises a stratum, a primary support and a tunnel lining are sequentially arranged on one side of the stratum, and a back-attached waterstop is arranged between the tunnel lining and the primary support; a deformation joint is arranged in the tunnel lining, and a steel plate middle-buried water stop belt is arranged in the middle of the deformation joint. A heating device is arranged in the area, located outside the steel plate middle-buried water stop belt, of the deformation joint, a drainage structure is arranged outside the heating device, and a water stop structure is arranged outside the drainage structure. And a gap in a deformation joint area between the steel plate middle-buried water stop belt and the back-attached water stop belt is filled with a grouting water stop material. The heating device is installed at the leakage position of the deformation joint, and grouting liquid reaction and plugging are promoted. A water stop structure is arranged on the downstream face of the deformation joint after grouting, a physical extrusion waterproof measure is formed, the deformation requirements of expansion caused by heat and contraction caused by cold and the like of the deformation joint can be met, and the water stop effectiveness is further improved.

The invention provides a construction method for comprehensive treatment of seepage water of a deformation joint of a subway tunnel. The construction method comprises the steps of pretreatment of a seepage part, grouting and plugging of an inclined hole, reconstruction of a waterproof layer, brushing of waterproof paint, laying of a waterproof roll, installation of a rubber waterstop, reinforcement of embedded steel bars, construction of a waterproof coating film, installation of a drainage box system, recovery of decoration equipment and the like. The method comprises the steps of mechanical cutting, high-pressure cleaning pretreatment, double-liquid alternate grouting plugging, three-layer gradient waterproof layer reconstruction, high-elasticity waterproof coating brushing, self-adhesion type polymer coiled material laying, telescopic rubber waterstop installation, diamond thin-wall drill bar planting reinforcement, multi-layer waterproof coating construction and integration of a stainless steel drainage box system. And a treatment scheme with strong systematicness and excellent waterproof performance is formed. Compared with a traditional method, gradient construction and long-term effectiveness of the waterproof layer are emphasized, the flexibility and sealing performance of the waterproof structure are enhanced, deformation is effectively dealt with, the structure is reinforced, it is ensured that leaked water is effectively discharged, and the service life of the subway tunnel is prolonged.

The invention discloses an assembly type efficient sound insulation cover convenient to install, and relates to the technical field of sound insulation covers. Comprising a plurality of pieces of main body square steel, the main body square steel are linearly and evenly distributed at equal intervals, jacking mechanisms used for improving the bottom supporting strength are arranged on the inner walls of the main body square steel correspondingly, and assembly type connecting mechanisms used for improving the connecting strength and stability are installed in the main body square steel correspondingly; according to the assembly type efficient sound insulation cover convenient to install, main body square steel is inserted and limited in a penetrating and inserting mode through the assembly type connecting mechanism, the defect that limiting performance is insufficient due to the fact that a lap joint mode is directly used in a traditional structure is overcome, the whole assembly process is simpler and more convenient, rubber pads and expansion water stop strips are arranged at splicing joints, and the assembly efficiency is improved. The vibration transmission of equipment can be blocked, the inherent frequency is kept away from the vibration frequency of the equipment, secondary noise caused by resonance is avoided, meanwhile, through gaps are reduced, the noise is prevented from leaking from the insertion hole position, and the problem of noise leakage is solved.

The invention discloses a preparation method of a rubber waterstop material with a low compression set rate, which comprises the following steps: firstly, carrying out blending reaction on hydroxyl silicone oil and boric acid to obtain liquid polyborosiloxane; the preparation method comprises the following steps: adding liquid polyborosiloxane and natural rubber into an internal mixer according to a ratio, and carrying out internal mixing to obtain a mixture; adding zinc oxide, an anti-aging agent, stearic acid and an anti-tearing agent into the obtained mixture, and continuously mixing; continuously adding kaolin talcum powder, calcium carbonate, calcium oxide, white carbon black, N550, N330 and KH550, and internally mixing again to obtain a preform; adding a vulcanization accelerator and a vulcanizing agent into the preform, and continuously mixing to obtain a rubber material to be vulcanized; and vulcanizing and forming the rubber material to be vulcanized to prepare the rubber water-stop belt material with the low compression set rate. According to the invention, the compression set rate of the rubber material can be reduced while the tensile strength, elongation, tear resistance and other properties of the rubber are not sacrificed, so that the product performance is enhanced.

The utility model discloses a waterproof moisture-proof underground power transmission cable, which relates to the technical field of power transmission cables and comprises a polyvinyl chloride outer sheath, a polyvinyl chloride (PVC) inner sheath and a cable core, a cross-linked polyethylene insulating sleeve is arranged on the outer side of the cable core, and woven filler is arranged between the cable core and the PVC inner sheath. A waterproof sleeve, an outer semiconductor shielding sleeve and a water swelling strip are sequentially arranged on the outer side of the PVC inner sheath from inside to outside in a contact mode, annular grooves are formed in the outer side of the water swelling strip in the axis direction of the water swelling strip at intervals, V-shaped dredging grooves are symmetrically formed in the two sides of each annular groove, and the interiors of the annular grooves and the interiors of the V-shaped dredging grooves are communicated. According to the scheme, the water swelling strip is arranged between the polyvinyl chloride outer sheath and the outer semiconductor shielding sleeve, after water seepage occurs in the cable, the water swelling strip can continuously absorb water to swell, then irregular gaps in splicing seams can be formed, and the water stopping and waterproof effects are achieved.

The invention relates to the technical field of tunnel supporting, in particular to a self-expanding pipe shed advance supporting system for a weak water-rich surrounding rock tunnel, which comprises a tunnel face stability identification module, a grouting effect extraction module, a component supporting adaptation module, a pipe shed expansion execution module and a surrounding rock instability early warning module. According to the method, a particle loose section is identified through the change trend of the void ratio of the tunnel face and the contact pressure, the waterstop coverage integrity is analyzed by combining the multi-dimensional comparison of the grouting diffusion range and the permeation speed, and the component adaptability is judged by extracting the anchoring depth of the component and the joint state information according to the design requirement; and the confining pressure change rate before and after expansion is collected to recognize a section with insufficient supporting force and mark a position needing to be processed, a tunnel face stability threshold value is constructed according to the displacement rate and the crack growth trend, accurate early warning of a risk section is achieved, and a supporting control closed loop integrating recognition, verification, adaptation, intervention and early warning is constructed.

The invention relates to the technical field of tunnel engineering waterproof construction, and discloses a tunnel lining waterstop construction method which comprises the following steps: cleaning and welding a waterstop joint; the water-stop belt is positioned along a lining formwork preset line, tension is applied through cooperation of a steel bar fixing point and a tension clamp, and the gap between the water-stop belt and the formwork is controlled to be smaller than or equal to 0.5 mm; an anchoring part is installed at the bottom of the waterstop, a vertical flange of the anchoring part is used for pressing the lower edge of the waterstop, and a horizontal flange is embedded into concrete; silica gel-based flexible isolating membranes are laid on the two sides of the water stop belt, and the top of the water stop belt is connected with an inflatable expansion strip; nanometer epoxy resin is injected into the micro-channel, the injection pressure and the air pressure of the inflatable expansion strip are dynamically adjusted, and curing is conducted till the filling rate of the nanometer epoxy resin reaches 95% and the air pressure is stable; and finally, concrete is poured, the jacking pressure of the formwork on the water stop belt is adjusted in a partitioned mode through the hydraulic jacking module, and the pressure is relieved after the concrete is initially set. The waterproof sealing structure is mainly used for improving the waterproof sealing performance and the structural stability of the tunnel lining joint.

A settlement driving control structure for forced-settlement rectification and a settlement driving control method for forced-settlement rectification are provided. The settlement driving control structure includes: a vertical hole is formed in a raft of a building, a lower end of an anchor bolt is anchored at the bottom of the vertical hole and the other end of the anchor bolt extends out of the vertical hole to be connected to a tensioning device, two grouting pipes are configured for grouting to form an anchorage body, and two waterstop rubber rings are spaced apart on a position of the anchor bolt above the anchorage body. For a building with a great load on the upper part, a building foundation and a deep stable stratum are connected as a whole by stress application through the device.

The utility model provides a waterstop detection device. The waterstop detection device comprises a detection bench; the two fixing assemblies are arranged on the detection table in a mirror image mode, and each fixing assembly comprises a movable plate arranged on the detection table in a sliding mode, a pushing piece arranged on the movable plate, two semi-conical clamping blocks arranged on the pushing piece and a locking ring which is arranged on the detection table in a sliding mode and is opposite to the conical surfaces of the two semi-conical clamping blocks; the driving assembly is connected with the two movable plates. According to the waterstop detection device, the two movable plates can move oppositely and slide towards the locking ring through the driving assembly, and when the semi-conical clamping blocks extend into the locking ring, the locking ring pushes and limits the conical surfaces of the semi-conical clamping blocks, so that the two semi-conical clamping blocks get close to each other and clamp and lock the waterstop. And then, the semi-conical clamping block and the locking ring continue to slide and stretch the water-stop belt, so that the automatic clamping and locking effect in the stretching test process of the water-stop belt is achieved.

The utility model belongs to the field of constructional engineering, and discloses a water blocking structure for a concrete structural joint to act on an ultrahigh water head, which comprises a copper waterstop and an expansion waterstop strip, the copper waterstop penetrates through the concrete structural joint and is positioned in concrete, the distance between the copper waterstop and the upstream face of the concrete is not less than 20cm, and the expansion waterstop strip is arranged in the concrete structural joint. The copper water stop belt located at the concrete structural joint is in a groove shape, and expansion water stop strips are embedded in concrete on the two sides of the structural joint and arranged on the copper water stop belt. The one-way and two-way water retaining device is suitable for building structural joints with high water heads and ultrahigh water heads, the principle is simple, machining and mounting are easy, the water retaining reliability is improved, and the one-way and two-way water retaining effect is achieved.

A waterproof structure for a panel joint of an underground diaphragm wall includes a first waterstop and a first cover plate. The panel joint is provided with a wall connection plate. The underground diaphragm wall has an excavation surface. In a direction perpendicular to the excavation surface, the wall connection plate is arranged below the excavation surface of the underground diaphragm wall. A first accommodating groove is defined between the wall connection plate and the panel joint and adjacent to the excavation surface. The first waterstop is arranged in the first accommodating groove, and both wings of the first waterstop are respectively and adhesively bonded to the two sides of the panel joint. The first cover plate corresponds to the first accommodating groove and is arranged at the excavation surface. The first cover plate is detachably connected to the underground diaphragm wall.

The utility model discloses a water stop structure suitable for an upper gate room of a high gate with a deep and thick covering layer in the technical field of engineering water stop, which comprises a plurality of gate plates, a structural seam is arranged between two adjacent gate plates, the structural seam is communicated with a water stop cavity, and a water stop device is filled in the water stop cavity. The water stop device comprises a first mortar layer, a flexible filler layer and a second mortar layer which are sequentially filled in the structural joint from top to bottom, a copper sheet water stop assembly and a water stop belt assembly are arranged on the flexible filler layer in a penetrating mode at intervals, the overall structure is large in flexibility effect, the function of adapting to large uneven deformation between adjacent gate sections can be achieved, damage is not prone to occurring, and the service life of the water stop device is prolonged. Therefore, safe operation of the water gate structure is guaranteed.

The invention relates to the technical field of rock-soil anchoring construction, in particular to a pressure type anti-floating anchor rod and a construction method thereof.The pressure type anti-floating anchor rod comprises an anchor rod body, a fixing section is arranged at the bottom of the anchor rod body, and a plurality of bearing bodies are arranged above the anchor rod body; the concrete cushion is located around the top end of the anchor hole; the bearing plate is arranged on the anchor rod body in a sleeving mode and located above the concrete cushion layer; the water swelling rubber water stop strip is arranged between the concrete cushion layer and the bearing plate; after the prestress of the anchor rod is applied, the water swelling rubber water stop strip is pressed between the bearing plate and the concrete cushion layer; the waterproof layer is located on the upper side of the concrete cushion layer and makes contact with the concrete cushion layer in an attached mode. The waterproof expansion water stop strip is arranged between the concrete cushion layer and the bearing plate, liquid leakage of underground water along the anchor hole can be effectively prevented, meanwhile, the waterproof layer and the concrete cushion layer are laid, and the waterproof performance of the underground structure is guaranteed to the maximum degree.

The present invention relates to the technical field of concrete construction, and in particular to an elevated water tank bottom slab induced joint construction method. The method comprises the following steps: S1: laying externally bonded rubber waterstops below a center line position of a selected induced joint; S2: disconnecting bottom slab transverse reinforcements on the left side and the right side of the induced joint, and respectively additionally arranging constructional reinforcements on the left side and the right side of the induced joint; and laying a buried rubber waterstop at the induced joint; and S3: before pouring of a bottom slab of an elevated water tank to form a concrete pouring body, mounting a strip plate-shaped waterstop type inducer at the induced joint, additionally arranging an extruded polystyrene board at the upper end of the waterstop type inducer, when concrete pouring is completed, cleaning up the extruded polystyrene board, and then filling and sealing the induced joint with a polysulfide sealant. According to the present solution, the externally bonded rubber waterstop, the buried waterstop and other waterstop materials are used to perform anti-seepage treatment on a construction joint; and a construction joint is formed by means of the waterstop type inducer, and when the construction joint has been formed, the construction joint is filled with the polysulfide sealant, thereby achieving the compensation effect during expansion and contraction of the induced joint.

The invention relates to a comprehensive construction method for a Larsen steel sheet pile cofferdam of an anti-typhoon cross-sea bridge. The comprehensive construction method comprises the steps that firstly, BIM and VR application is conducted; 2, construction preparation is conducted; thirdly, a first enclosing purlin is installed, and steel sheet piles are driven in an inserted mode; fourthly, steel enclosing purlins and water stops are installed; 5, bottom sealing concrete is constructed; sixthly, the elevator cage is installed; seventhly, a bearing platform is constructed; eighthly, dismantling construction is conducted; ninthly, the steel sheet piles are recycled; and step 10, intelligent monitoring application. The construction challenges caused by complex landforms at the bottom of the foundation are effectively overcome by adopting targeted construction measures, the resistance to typhoon and storm impact is enhanced, corresponding improvement measures are integrated in all construction processes, and positive effects are achieved.

The invention provides a water-stop belt mounting device and method based on a secondary lining trolley, relates to a water-stop belt mounting technology, and particularly discloses a trolley structure, a supporting frame is mounted on one side of the trolley structure, a plurality of end formworks are sequentially arranged on the outer side of the supporting frame and hinged to one another, and the other end formworks are hinged to the other side of the supporting frame. The multiple end formworks are sequentially spliced to be in an arc shape, a second mounting groove is formed in one side of each end formwork, and a first mounting groove is formed in the top of each end formwork. The two traction grooves are formed in the extension direction of the end formwork, the two traction grooves are located in the second mounting groove or the first mounting groove correspondingly, traction ropes penetrate through the traction grooves correspondingly, clamping structures detachably connected with the water stop belts are arranged on the traction ropes, and the clamping structures are arranged in the second mounting groove or the first mounting groove; the traction winch is mounted in the trolley structure, and the traction rope is wound on a winch of the traction winch, so that the waterstop can be effectively prevented from being twisted, deviated or wrinkled in the traction process, and the accuracy of the mounting position is ensured.

The utility model provides an underground tunnel deformation joint water leakage diversion structure which comprises a deformation joint filling material and a middle-buried rubber waterstop and further comprises geotechnical cloth, a spring water seepage pipe, sealant and a stainless steel water receiving box, the geotechnical cloth wraps the spring water seepage pipe to form a structure that the geotechnical cloth wraps a spring framework water-permeable diversion pipe, and the spring framework water-permeable diversion pipe is arranged in the middle-buried rubber waterstop. The output ends of the spring water seepage pipes are connected with drainage side ditches on the two sides of a tunnel to form a first flow guide structure, the upper portion of the geotextile wrapped spring framework water seepage flow guide pipe structure is filled with deformation joint filling materials, the outer side of the geotextile wrapped spring framework water seepage flow guide pipe structure is sealed through sealant, and a stainless steel water receiving box is arranged at a deformation joint of the downstream face of the structure. The stainless steel water receiving box is fixed to the downstream face of the structure through stainless steel expansion bolts, the spring water seepage pipe seeps into the drainage box from the bottom of the structure, and a second flow guide structure is formed. When the underground tunnel deformation joint water leakage diversion structure is adopted, deformation joint water leakage can be treated without damaging a tunnel structure or chiseling off a small amount of the structure, and the integrity of the tunnel structure can be effectively protected.

The utility model provides a waterstop sleeve for industrial pool waterproofing, which is characterized in that the waterstop sleeve comprises a sleeve body and at least one waterstop ring sleeved along the outer wall of the sleeve body, and the waterstop ring comprises a horizontal part in sealing connection with the sleeve body and a bending part which is connected with the horizontal part and is bent upwards; the horizontal part, the bent part and the outer wall of the sleeve body form a space for containing liquid, and the liquid in a water pool can be firstly stored in the space when leaking. The casing pipe body is arranged outside a pipeline to be installed in a sleeved mode, and the water stop casing pipe further comprises a sealing piece used for sealing a gap between the pipeline to be installed and the casing pipe body. Compared with the prior art, the bent part is arranged on the water stop ring, so that the structure of the water stop ring is changed, the water seepage path is prolonged, and the water stop effect is improved. Meanwhile, the sealing piece is arranged between the sleeve body and the pipeline to be installed, sealing of the water stop sleeve and the pipeline to be installed is achieved, and the waterproof capacity is further improved.

The utility model discloses a water stop structure of a buoyancy tank type dock gate, and relates to the technical field of dock gates. The utility model provides a water stop structure of a buoyancy tank type dock gate. The water stop structure comprises a pressure bearing pad, a water stop belt and a pressing plate. The waterstop is located at the top of the pressure-bearing pad; the water stop belt comprises an annular part, a connecting part and a strip-shaped part, and the connecting part and the strip-shaped part are sequentially connected to one side of the annular part; the pressing plate is placed on the top of the connecting part, and the pressing plate, the connecting part and the pressure-bearing pad are fixed through the fixing assembly; the strip-shaped part comprises a plurality of notches, and in any notch, the strip-shaped part and the pressure bearing pad are fixed through the fixing assembly. In the embodiment provided by the utility model, the waterstop is fixedly arranged on the bearing plate through the pressing plate and the fixing assembly, and the bearing plate is fixed on the dock gate. After the dock gate is installed and closed, the waterstop is tightly attached to the docking block and the dock sill through the pressure of seawater on the outer side, the seawater is isolated, and the waterstop and seepage-proofing effects of the dock gate are achieved.

The invention provides a basement outer wall joint position anti-seepage device which comprises basement outer walls and further comprises an elastic rubber water stop piece arranged between the basement outer walls and used for covering a joint and compensating deformation of the joint. The strip-shaped fixing piece is used for fixing the elastic rubber water stop piece on a base layer on one side of a joint through a fastener; a water collecting opening of the funnel-shaped water collector faces the elastic rubber water stop piece; the drainage pipe is connected with a water outlet of the funnel-shaped water collector; the elastic rubber water stop piece, the strip-shaped fixing piece and the funnel-shaped water collector are connected into an integral prefabricated assembly in a bonding mode. According to the waterproof structure, the fundamental problems of'stopping but not draining and only blocking but not dredging 'in a traditional basement outer wall joint waterproof technology are solved, and the industrial defects that an existing water stop belt is difficult to adapt to joint deformation and prone to failure and tearing, and a waterproof layer is damaged due to water pressure accumulation caused by the fact that leaked water cannot be actively guided and drained are effectively overcome.

The utility model belongs to the technical field of water stop structures, and particularly relates to an LUUI closed type rubber water stop belt and a water stop structure used at the joint of a new building and an old building. The water stop belt comprises a double-U-shaped sealing belt, an L-shaped wing plate belt and an I-shaped wing plate belt. The double-U-shaped sealing belt is formed by oppositely buckling two U-shaped belts to form a sealed whole; the L-shaped wing plate belt and the I-shaped wing plate belt are fixed to the two opposite sides of the double-U-shaped closed belt respectively. The water stop structure comprises an L-shaped groove body formed in the side, close to a joint, of an original building, and an L-shaped wing plate strip is matched with the L-shaped groove body and fixed to the L-shaped groove body. The double-U-shaped sealing belt is arranged in a joint of an original building and a new building, and the width B of the double-U-shaped sealing belt is matched with the width of the joint. And the I-shaped wing plate strip is poured in a new building. The LUUI closed type rubber waterstop and the waterstop structure can adapt to telescopic displacement and uneven settlement difference between new and old building concrete, so that the waterstop does not lose efficacy due to overlarge settlement difference and vibration dislocation, and potential safety hazards caused by premature tearing failure are avoided.

The invention relates to the technical field of deep foundation pit engineering construction, in particular to a first-supporting-and-second-supporting system construction method based on back pressure soil of a deep foundation pit of a temporary operating subway, and the method comprises the following steps: aiming at the construction problem of the deep foundation pit of the temporary operating subway, forming a collaborative supporting system by reserving a back pressure soil body, a supporting pile and a top beam; layered excavation is carried out by adopting a support-first and support-second process, and a next layer is excavated after support installation and prestress application are completed; deep foundation pit backfilling and steel support layered dismantling are executed step by step along with commercial main body structure construction; after the commercial main body reaches the preset stage, integrated construction including static cutting, rigid connecting component pre-embedding for settlement prevention and middle-embedded type water-stop belt waterproofing is conducted on the subway channel; and a real-time monitoring system is combined to ensure construction safety and subway structure stability. The method can effectively balance the stability of the deep foundation pit and metro protection requirements, improves the construction efficiency, solves the problems of settlement and leakage of construction joints, and is suitable for deep foundation pit engineering close to an operating metro.

The invention provides a leakage plugging construction method for injecting soluble polyurethane into an inclined hole in an upstream face of a deformation joint. The leakage plugging construction method comprises the steps of pretreatment, inclined hole positioning and drilling, grouting plugging, epoxy resin reinforcement and the like. And drilling holes at an inclination angle of 30-45 degrees, grouting oil-soluble polyurethane slurry at intervals from bottom to top in a jumping manner, and reinforcing by adopting epoxy resin after grouting to form a composite waterproof layer. The method further comprises reinforcing measures such as brushing of polyurethane waterproof paint, installation of a water stop belt and a drainage box, laying of waterproof coiled materials and the like. The construction environment needs to be dry and free of clear water, and the temperature is larger than or equal to 5 DEG C. And finally, recovering the decorative layer and the electromechanical equipment, and verifying through a 48-hour closed water test. According to the method, the inclined hole grouting technology and composite waterproof layer construction are utilized, the slurry diffusion uniformity and permeability are improved, the plugging efficiency is enhanced, the waterproof layer with high strength and good flexibility is formed, the method adapts to the special working condition of the subway tunnel, the waterproof performance of the deformation joint is remarkably improved, and the service life of the deformation joint is remarkably prolonged.

The invention discloses a novel waterproof rubber waterstop clamping performance detection machine, and relates to the technical field of rubber waterstop detection, the novel waterproof rubber waterstop clamping performance detection machine comprises a workbench and a stretching mechanism installed in the middle of the top of the workbench, the top of the workbench is rotatably provided with a protective cover, the top of the protective cover is fixedly provided with a displacement sensor, and the displacement sensor is fixedly connected with the workbench. Guide rails are fixedly installed on the two sides of the top of the workbench, a sliding clamping mechanism is slidably installed on the tops of the guide rails, a fixed clamping mechanism is fixedly installed at the ends of the guide rails, and a limiting mechanism is fixedly installed on the top of the workbench. According to the novel waterproof rubber waterstop clamping performance detection machine, stable tensile force is provided for a waterstop through the stretching mechanism, the rubber waterstop is firmly clamped through the sliding clamping mechanism and the fixed clamping mechanism, and when the rubber waterstop is broken, the clamping performance of the rubber waterstop is analyzed by detecting the numerical value changes of the displacement sensor and the tension meter.